BI-DIRECTIONAL STRATOSPHERE SATELLITE DMB REPEATER APPARATUS AND ITS METHOD

摘要

1. The art that the claimed invention ; The present invention relates to a two-way stratosphere will satellite digital multimedia broadcasting (DMB) relay apparatus and method. ; 2. SUMMARY ; The present invention is invented to solve this by using a bi-directional satellite DMB relay apparatus placed in the stratosphere stratosphere, satellite DMB satellite is not only possible to take advantage of the general broadcasting and communication geostationary satellites and users in order to transfer the multimedia on-demand digital information to the satellite DMB center (DMOD: Digital Multimedia on Demand) for providing two-way interactive stratospheric satellite DMB service and satellite DMB service, such as access point and its object is to provide a method that. ; 3. Solution subject matter of the invention ; This invention provides a two-way stratospheric satellite digital multimedia broadcasting (DMB) in the relay apparatus, the satellite signal between the geostationary satellite and the stratospheric two-way satellite DMB relay apparatus (C-band, Ku first receiving means to send and receive band or Ka band); Down-DMB relay means for down-converting and amplifying a satellite DMB signal (L-band or S-band) to the satellite signal received from the geostationary satellite to a satellite DMB receiving terminals on the ground; A second transmitting and receiving means for sending and receiving the satellite DMB signal among the two-way satellite DMB relay apparatus and the stratospheric satellite DMB terminal; And further comprising the up-conversion and up-DMB relay means for amplifying the satellite DMB signal received from the user's order terminal to the satellite DMB to the geostationary satellite the received signal, is located in the stratosphere to relay satellite DMB service it features. ; 4. An important use of the invention ; The present invention provides satellite broadcasting and satellite communication systems, etc. yiyongdoem.